$ git clone -n https://src.fedoraproject.org/rpms/messagelib.git /var/lib/mock/f40-build-1830797-24926/root/chroot_tmpdir/scmroot/messagelib
Cloning into '/var/lib/mock/f40-build-1830797-24926/root/chroot_tmpdir/scmroot/messagelib'...
$ git fetch origin dbcb644a3c63004e962e8e8b9a59b6fee4dad95e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/messagelib
 * [new ref]         dbcb644a3c63004e962e8e8b9a59b6fee4dad95e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbcb644 24.05.2